23
EN
Fig.28 Arc ignition
a) Place gas nozzle on
workpiece
b) Touch down tungsten tip to
ignite arc
c) Arc is ignited
TIG welding
(continued)
6. Place the the gas nozzle on the ignition location so that there is a gap of 2 -3 mm
between the tungsten tip and the workpiece (Fig.28a)
7. Gradually tilt up the welding toch until the tungsten tip touches the workpiece
(Fig.28b)
8. Raise the torch and pivot it into the normal position - the arc ignites (Abb.28c)
9. Start welding
NOTE! When the weld is finished, the gas post-flow time required to protect
the tungsten electrode and the weld depends on the welding current
Welding current gas post-flow time
50 A 6 s
100 A 7 s
150 A 8 s
200 A 9 s
250 A 12 s
300 A 13 s
350 A 14 s
400 A 16 s
10. To finish the welding operation, take off the TIG gas-valve torch from the compo-
nent, untill arc extinguishes.
11. At the end of the welding operation, wait the gas post-flow time
12. Close the gas shut-off valve on the TIG gas-valve torch
All parameter command values that have been set by means of the adjusting dial (1)
will remain stored until the next time they are changed. This is true even if the power
source is switched off and on again in the meantime.
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